<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
      <!-- 添加角色按钮区域 -->
      <el-row>
        <el-col>
          <el-button type="primary" @click="addRole()">添加角色</el-button>
        </el-col>
      </el-row>

      <!-- 角色列表区域 -->
      <el-table :data="rolelist" border stripe>  
        <!-- 展开列 -->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row :class="['bdbottom', i1 === 0 ? 'bdtop' : '', 'vcenter']" v-for="(item1, i1) in scope.row.children" :key="item1._id">
              <!-- 渲染一级权限 -->
              <el-col :span="5">
                <el-tag closable @close="removeRightById(scope.row, item1._id)">{{item1.authName}}</el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 渲染二级和三级权限 -->
              <el-col :span="19">
                <!-- 通过 for 循环 嵌套渲染二级权限 -->
                <el-row :class="[i2 === 0 ? '' : 'bdtop', 'vcenter']" v-for="(item2, i2) in item1.children" :key="item2.id">
                  <el-col :span="6">
                    <el-tag type="success" closable @close="removeRightById(scope.row, item2._id)">{{item2.authName}}</el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag type="warning" v-for="(item3) in item2.children" :key="item3._id" closable @close="removeRightById(scope.row, item3._id)">{{item3.authName}}</el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>

            <!-- <pre>
              {{scope.row}}
            </pre> -->
          </template>
        </el-table-column>
        <!-- 索引列 -->
        <el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <template slot-scope="scope">
            <el-button size="mini" type="primary" icon="el-icon-edit"  @click="showEditRoleDialog(scope.row._id)">编辑</el-button>
            <el-button size="mini" type="danger" icon="el-icon-delete" @click="removeRoleById(scope.row._id)">删除</el-button>
            <el-button size="mini" type="warning" icon="el-icon-setting" @click="showSetRightDialog(scope.row)" v-if="scope.row.roleName != 'normal' ">分配权限</el-button>
          </template>
        </el-table-column>
      </el-table>
    </el-card>

    <!-- 添加角色的对话框 -->
    <el-dialog title="添加角色" :visible.sync="addRoleDialogVisible" width="50%" @close="addRoleDialogClose">
      <!-- 内容主体区域 -->
      <el-form :model="addRoleForm" :rules="addRoleFormRules" ref="addRoleFormRef" label-width="80px">
        <!-- 角色 -->
        <el-form-item label="角色" prop="roleName">
          <el-input v-model="addRoleForm.roleName"></el-input>
        </el-form-item>
        <!-- 描述 -->
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="addRoleForm.roleDesc" type="textarea"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addRoleInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改角色对话框 -->
    <el-dialog title="修改角色" :visible.sync="editRoleDialogVisible" width="50%" @close="editRoleDialogClose">
      <!-- 内容主体区域 -->
      <el-form :model="editForm" :rules="addRoleFormRules" ref="editRoleFormRef" label-width="80px">
        <!-- 角色Id -->
        <el-form-item label="角色Id">
          <el-input v-model="editForm._id" disabled></el-input>
        </el-form-item>
        <!-- 角色名 -->
        <el-form-item label="角色名" prop="roleName">
          <el-input v-model="editForm.roleName"></el-input>
        </el-form-item>
        <!-- 邮箱 -->
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="editForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editRoleInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配权限的对话框 -->
    <el-dialog title="分配权限" :visible.sync="setRightDialogVisible" width="50%" @close="setRightDialogClosed">
      <!-- 树形控件 -->
      <el-tree :data="rightslist" :props="treeProps" show-checkbox node-key="_id" :default-expand-all="true" :default-checked-keys="defKeys" ref="treeRef"></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data () {
    return {
      // 所有角色列表数据
      rolelist: [],
      // 控制添加角色对话框的显示与隐藏
      addRoleDialogVisible: false,
      // 控制分配权限对话框的显示与隐藏
      setRightDialogVisible: false,
      // 所有权限的数据
      rightslist: [],
      // 树形控件的属性绑定对象
      treeProps: {
        label: 'authName',
        children: 'children'
      },
      // 默认选中的节点Id值数组
      defKeys: [],
      // 当前即将分配权限的角色id
      roleId: '',
      // 所有角色列表数据
      rolesList: [],
      // 添加表单数据
      addRoleForm: {
				roleName: '',
				roleDesc: ''
			},
      // 添加表单的验证规则对象
      addRoleFormRules: {
        roleName: [{
          required: true,
          message: '请输入角色名',
          trigger: 'blur'
        },
        {
          min: 2,
          max: 15,
          message: '角色名的长度在 2 到 15 个字符',
          trigger: 'blur'
        }
        ],
				roleDesc: [{
				  required: true,
				  message: '请输入角色描述',
				  trigger: 'blur'
				},
				{
				  min: 10,
				  max: 50,
				  message: '角色描述的长度在 10 到 50 个字符',
				  trigger: 'blur'
				}
				]
      },
      // 控制修改角色对话框的显示和隐藏
      editRoleDialogVisible: false,
      // 查询到的用户信息对象
      editForm: {},
      // 修改角色表单数据
      editRoleForm: {
        roleId: '',
        roleName: '',
        roleDesc: ''
      },
			// 当前选中的节点
			nodeKey: []
    }
  },
  created () {
    this.getRolesList()
  },
  methods: {
    // 获取所有角色的列表
    async getRolesList () {
      const { data: res } = await this.$http.get('roles')
			console.log(res);
      if (res.code !== 200) return this.$message.error(res.msg)
			this.$message.success(res.msg)
      this.rolelist = res.data;
    },
    // 根据Id删除对应的权限
    async removeRightById (role, _id) {
			console.log(role,_id);
			// return;
      // 弹框提示用户是否要删除
      const confirmResult = await this.$confirm(
        '此操作将永久删除该权限, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)

      if (confirmResult !== 'confirm') {
        return this.$message.info('取消了删除！')
      }

      const { data: res } = await this.$http.delete( `roles/auth/${role._id}/${_id}`)
			console.log(res);
			// return;
      if (res.code !== 200) return this.$message.error(res.msg)
			
      // this.getRolesList()
      role.children = res.data;
    },
    // 展示分配权限的对话框
    async showSetRightDialog (role) {
			console.log('role',role)
      this.roleId = role._id;
			// return;
      // 获取所有权限的数据
       const { data: res } = await this.$http.get('auths');
			console.log(res);
      if (res.code !== 200) return this.$message.error(res.msg)
      // 把获取到的权限数据保存到 data 中
      this.rightslist = res.data;

      // 递归获取三级节点的Id
			// this.defKeys = role.children;
      this.getLeafKeys(role, this.defKeys)
			console.log(this.defKeys);
      this.setRightDialogVisible = true
    },
    // 通过递归的形式，获取角色下所有三级权限的_id，并保存到 defKeys 数组中
    getLeafKeys (node, arr) {
      // 如果当前 node 节点不包含 children 属性，则是三级节点
      if (!node.children) {
        return arr.push(node._id)
      }

      node.children.forEach(item => this.getLeafKeys(item, arr))
    },
    // 监听分配权限对话框的关闭事件
    setRightDialogClosed () {
      this.defKeys = []
    },
		
		// 拷贝
		copy (obj) {
		        var newobj = obj.constructor === Array ? [] : {};
		        if(typeof obj !== 'object'){
		            return;
		        }
		        for(var i in obj){
		           newobj[i] = typeof obj[i] === 'object' ? this.copy(obj[i]) : obj[i];
		        }
		        return newobj
		},
		
		// 遍历
		ergodic(obj1, obj2) {
			// 拷贝数组对象
			let copyobj = this.copy(obj1);
			
			obj1.forEach((item,index) => {
				copyobj[index].children = [];
				item.children.forEach(items=>{
					obj2.forEach(items1 => {
						if (items._id == items1._id) {
							copyobj[index].children.push(items1);
						}
					})
				})
			})
			return copyobj;
		},
		
		getCheckedNodes(level) {
			return this.$refs.treeRef.getCheckedNodes(false,true).filter(item => {return item.level == level});
		},
		
    // 点击为角色分配权限
    async allotRights () {
		
			// 分级权限
			
			let level2Copy = this.ergodic(this.getCheckedNodes(2),this.getCheckedNodes(3));
			let level1Copy = this.ergodic(this.getCheckedNodes(1),level2Copy);

			console.log('copy',level1Copy);
			// return;

     const {data: res } = await this.$http.put('roles/' + this.roleId, {
       auth: level1Copy
     })
     console.log(res)
     if (res.code !== 200) return this.$message.error(res.msg)
     // 提示修改成功
     this.$message.success(res.msg)
     // 刷新数据列表
     this.getRolesList();
		 this.$emit('changeMenu');
     this.setRightDialogVisible = false
		 
    },
    // 监听添加角色的对话框
    async addRole () {
      this.addRoleDialogVisible = true
    },
    // 监听添加角色对话框的关闭事件
    addRoleDialogClose () {
      this.addRoleForm = {}
    },
    // 监听添加用户对话框的确认按钮事件
    addRoleInfo () {
			console.log(this.addRoleForm);
      this.$refs.addRoleFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.post('roles', this.addRoleForm)
        console.log(res)
        if (res.code !== 200) return this.$message.error(res.msg)
        this.$message.success(res.msg)
        this.addRoleDialogVisible = false
        this.getRolesList()
      })
    },
    async removeRoleById (id) {
      // 弹框询问角色是否删除数据
      const confirmResult = await this.$confirm('此操作将永久删除该角色信息, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // 如果用户确认删除,则返回值为字符串 confirm
      // 如果用户取消了删除,则返回值为字符串 cancel
      // console.log(confirmResult)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除！')
      }
      const { data: res } = await this.$http.delete('roles/' + id)
			console.log(res);
      if (res.code !== 200) return this.$message.error(re.msg)
      this.$message.success(res.msg)
      this.getRolesList()
    },
    // 展示编辑角色的对话框
    async showEditRoleDialog (id) {
      console.log(id)
      const { data: res } = await this.$http.get('roles',{
				params: { _id: id }
			})
			console.log(res);
      if (res.code !== 200) return this.$message.error(res.msg)
      this.editForm = res.data;
      this.editRoleDialogVisible = true
    },
    // 监听修改对话框的关闭事件
    editRoleDialogClose () {
      this.$refs.editRoleFormRef.resetFields()
      this.editForm = {}
    },
    // 修改对话框确认按钮
    editRoleInfo () {
      this.$refs.editRoleFormRef.validate(async valid => {
        if (!valid) return
        const {data: res } = await this.$http.put('roles/' + this.editForm._id, {
          roleName: this.editForm.roleName,
          roleDesc: this.editForm.roleDesc
        })
        console.log(res)
        if (res.code !== 200) return this.$message.error(res.msg)
        // 关闭对话框
        this.editRoleDialogVisible = false
				// 提示修改成功
				this.$message.success(res.msg)
        // 刷新数据列表
        this.getRolesList()
      })
    }
  }
}
</script>

<style lang="less" scoped>
.el-tag {
  margin: 7px;
}

.bdtop {
  border-top: 1px solid #eee;
}

.bdbottom {
  border-bottom: 1px solid #eee;
}

.vcenter {
  display: flex;
  align-items: center;
}
</style>
